New West CoHow much does a deck cost in Northern Colorado?
A new deck in Northern Colorado costs about $34 to $40 a square foot in pressure-treated lumber, $47 to $54 in cedar, and $49 to $79 in composite, before railing, stairs and permits. Below are the rates we use, the add-ons that move the price, and worked examples.
Typical totals
- 12 × 16 pressure-treated deck, 40 ft of wood railing, one set of stairs, permit: $10,993 to $12,835
- 16 × 20 composite deck (Trex Enhance or TimberTech Prime), composite railing, stairs, permit: $24,365 to $28,115
- Tear off and rebuild a 300 sq ft deck in pressure-treated, with railing, stairs and permit: $18,405 to $21,490
Deck cost per square foot by material
| Decking | Installed, per sq ft |
|---|---|
| Pressure-treated | $34 to $40 |
| Cedar | $47 to $54 |
| Composite, Trex Enhance or TimberTech Prime | $49 to $57 |
| Composite, Trex Select or Transcend, TimberTech Reserve | $57 to $66 |
| Composite, Trex Lineage or Signature, TimberTech Legacy or AZEK | $68 to $79 |
Installed prices: framing, footings, decking, fasteners and labor. Our full deck, custom deck and composite deck pages have more on each.
Railing cost per linear foot
| Railing | Installed, per foot |
|---|---|
| Wood | $44 to $51 |
| Cedar | $77 to $89 |
| Composite | $115 to $130 |
| Aluminum (Westbury Tuscany) | $130 to $150 |
| Vertical cable (Westbury VertiCable) | $185 to $215 |
What else moves the price
| Item | Price |
|---|---|
| Stairs, up to about 5 steps with handrail | $2,350 to $2,700 a set |
| Second level framing | $12.5 to $14.5/sf more |
| Third level framing | $18.5 to $21/sf more |
| Steps between levels | $1,450 to $1,700 each |
| Remove the old deck and haul it away | $11 to $12.75/sf |
| Stain and seal (wood decks) | $3.3 to $3.8/sf |
| Deck permit and inspections | $355 to $415 |
| Second story height (taller posts, bracing, staging) | $9.75 to $11.25/sf more |
| Stair steps past 5 in a set | $275 to $320 each |
| Picture frame border | $3.8 to $4.4/sf |
| Hidden fasteners | $3.3 to $3.8/sf |
| Skirting | $38 to $44/ft |
| Privacy wall, 6 ft | $105 to $120/ft |
| Lighting: post caps, stair and rail lights | $2,300 to $2,650 |
| Hot tub support | $2,750 to $3,200 |
| Gate | $605 to $700 each |
| Pergola over the deck | $59 to $68/sf |
Deck still sound? Staining and repairs cost far less than a rebuild.
Prices by town
Most Larimer and Weld County towns price at our base rates. Boulder County runs higher (Longmont about 5%, Boulder about 10%), Greeley about 2% lower and Cheyenne about 8% lower. The estimator applies your town automatically. See areas we serve.
How to keep a deck on budget
- Pick the size first, then the material. A smaller composite deck can cost the same as a larger cedar one.
- Keep footings, ledger flashing and structural hardware. Cut stain, upgrades and extra railing first if the number has to come down.
- Put railing only where it is required (more than 30 inches off the ground) or wanted.
- If the frame is sound, a re-deck reuses it.
Questions
Do I need a permit for a deck?
Usually, if the deck is attached to the house, more than 30 inches off the ground, or over 200 square feet. We pull it and pass the fee through at cost.
Is composite worth it?
Composite costs more up front but never needs stain or sealer. Over 10 to 15 years, the stain and repair you skip often covers much of the difference.
How long does a deck take?
Most decks take one to two weeks on site once materials are in. Permits and HOA approval can add time before we start.
Can you reuse my old deck's frame?
Sometimes. If the joists, beams, ledger and footings are sound and to code, a re-deck saves money. We check on the walk and tell you straight.
More cost guides
Prices from New West Co's own rates, updated 2026-10-13. They match our online estimator. These are the prices we bid with. The site walk confirms them, and anything it finds shows on your bid as its own line.
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